Another new Singapore "Cool" thing

Now, any of you that are used to Urban living, please don't spoil my thinking that this is something "new" and really cool as I have never seen this before. Next time you have to go to the mall or airport, or somewhere where you had to park in a parking garage wouldn't it be great to know how many parking spaces are left and on what level they were located? No more wasting time circling an entire floor looking for a parking space when there isn't even one available on that floor. Avery and I went to a mall here called Plaza Singapura. When you enter the parking garage there is a digital sign that lists the levels in the parking garage and how many spaces are empty on each level. The number of spaces indicated changes as people enter a level and leave a level. I thought it was really a neat idea. Sure made parking easier. From what I can tell there are lasers that keep track of when a car passes through the beam of light. The system must know how many spaces are on each level and subtracts the available spaces when a car parks on each level. One other note too...this parking garage was so clean it looked as though the floors were moped and polished hourly.